prezto_config/modules/git/functions/git-stash-clear-interactive

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#
# Asks for confirmation before clearing the Git stash.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
local stashed
if [[ -f "$(git-dir)/refs/stash" ]]; then
stashed="$(git stash list 2> /dev/null | wc -l | awk '{print $1}')"
if (( $stashed > 0 )); then
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if read -q "?Clear $stashed stashed state(s) [y/N]? "; then
git stash clear
fi
fi
fi